Green led bulb in a socket up high, green led on my head, is how i roll. Seriously though, green led is supposedly the only "real" green light. No hermie issuse here, and i do allot of work that way. Most our rooms are on at night. I don't sleep so well after working in a lit up room for a few hours.
I used to, back in the day, have a green lens on a flAshlight for emergencies. I made it out of sprite/7up 2 litter bottles. 2/3 thick. I don't remember herm issues then, but i also only used it to periodically check on shit